Core Set 2019

Death Baron | Creature | Zombie Wizard | Skeletons you control and other Zombies you control get +1/+1 and have deathtouch. | Nils Hamm

Hired Blade | Creature | Human Assassin | Flash (You may cast this spell any time you could cast an instant.) | Mark Behm

Isareth the Awakener | Legendary Creature | Human Wizard | Deathtouch Whenever Isareth the Awakener attacks, you may pay {X}. When you do, return target creature card with mana value X from your graveyard to the battlefield with a corpse counter on it. If that creature would leave the battlefield, exile it instead of putting it anywhere else. | Jason Rainville

Mind Rot | Sorcery | | Target player discards two cards. | Seb McKinnon

Murder | Instant | | Destroy target creature. | Tyler Jacobson

Phylactery Lich | Creature | Zombie | Indestructible As Phylactery Lich enters the battlefield, put a phylactery counter on an artifact you control. When you control no permanents with phylactery counters on them, sacrifice Phylactery Lich. | Michael Komarck

Plague Mare | Creature | Nightmare Horse | Plague Mare can't be blocked by white creatures. When Plague Mare enters the battlefield, creatures your opponents control get -1/-1 until end of turn. | G-host Lee

Ravenous Harpy | Creature | Harpy | Flying {1}, Sacrifice another creature: Put a +1/+1 counter on Ravenous Harpy. | Sam Rowan

Skymarch Bloodletter | Creature | Vampire Soldier | Flying When Skymarch Bloodletter enters the battlefield, target opponent loses 1 life and you gain 1 life. | Tomasz Jedruszek